/*
    *  Licensed to the Apache Software Foundation (ASF) under one
    *  or more contributor license agreements.  See the NOTICE file
    *  distributed with this work for additional information
    *  regarding copyright ownership.  The ASF licenses this file
    *  to you under the Apache License, Version 2.0 (the
    *  "License"); you may not use this file except in compliance
    *  with the License.  You may obtain a copy of the License at
    *  
   *    https://www.apache.org/licenses/LICENSE-2.0
   *  
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License. 
   *  
   */
  package org.apache.directory.api.ldap.model.schema.normalizers;
  
  
  import org.apache.directory.api.asn1.util.Oid;
  import org.apache.directory.api.i18n.I18n;
  import org.apache.directory.api.ldap.model.constants.SchemaConstants;
  import org.apache.directory.api.ldap.model.exception.LdapException;
  import org.apache.directory.api.ldap.model.exception.LdapInvalidAttributeValueException;
  import org.apache.directory.api.ldap.model.message.ResultCodeEnum;
  import org.apache.directory.api.ldap.model.schema.Normalizer;
  import org.apache.directory.api.ldap.model.schema.PrepareString;
  import org.apache.directory.api.ldap.model.schema.SchemaManager;
  import org.apache.directory.api.util.Strings;
  
  
  /**
   * A normalizer for the objectIdentifierMatch matching rule.
   * 
   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
   */
  @SuppressWarnings("serial")
  public class ObjectIdentifierNormalizer extends Normalizer
  {
      /** A reference to the schema manager used to normalize the Name */
      private transient SchemaManager schemaManager;
  
      /**
       * Creates a new instance of ObjectIdentifierNormalizer.
       */
      public ObjectIdentifierNormalizer()
      {
          super( SchemaConstants.OBJECT_IDENTIFIER_MATCH_MR_OID );
      }
  
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void setSchemaManager( SchemaManager schemaManager )
      {
          this.schemaManager = schemaManager;
      }
  
  
      /**
       * {@inheritDoc}
       */
      @Override
      public String normalize( String value ) throws LdapException
      {
          if ( Strings.isEmpty( value ) )
          {
              return "";
          }
          
          String trimmedValue = value.trim();
          
          if ( Strings.isEmpty( trimmedValue ) )
          {
              return "";
          }
  
          String oid = schemaManager.getRegistries().getOid( trimmedValue );
          
          if ( oid == null )
          {
              // Not found in the schemaManager : keep it as is
              if ( Oid.isOid( trimmedValue ) )
              {
                  // It's an numericOid
                  oid = trimmedValue;
              }
              else
              {
                  // It's a descr : ALPHA ( ALPHA | DIGIT | '-' )*
                  for ( int i = 0; i < trimmedValue.length(); i++ )
                  {
                      char c = trimmedValue.charAt( i );
                      
                     if ( i == 0 )
                     {
                         if ( !Character.isLetter( c ) )
                         {
                             throw new LdapInvalidAttributeValueException( ResultCodeEnum.INVALID_ATTRIBUTE_SYNTAX, I18n.err(
                                 I18n.ERR_13724_INVALID_VALUE, value ) );
                         }
                     }
                     else
                     {
                         if ( !( Character.isDigit( c ) || Character.isLetter( c ) || ( c == '-'  ) || ( c == '_' ) ) )
                             {
                             throw new LdapInvalidAttributeValueException( ResultCodeEnum.INVALID_ATTRIBUTE_SYNTAX, I18n.err(
                                 I18n.ERR_13724_INVALID_VALUE, value ) );
                             }
                     }
                 }
                 
                 oid = trimmedValue;
             }
         }
         
         return oid;
     }
 
 
     /**
      * {@inheritDoc}
      */
     @Override
     public String normalize( String value, PrepareString.AssertionType assertionType ) throws LdapException
     {
         return normalize( value );
     }
 }